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i have a 2011 ram 3500 truck I use as a welding rig I travel a lot the truck has a 373 gear I want to know if I can change to a 342 ring and pinion gear my truck has a 6 speed standard shift transmission I am looking for better fuel mileage and I don't know if the ring and pinion or a programmer and air intake with 5 inch exchast from turbo back is the best way to go any help would be helpful..

thanks for the reply I need to start saving money on fuel and was looking for best way. I have put 100000 miles on the truck since new its a 6.7 cummins next question does any one know from experience if a programmer help with fuel mileage. and if so what are the best programmers to run.

If you do a quick search on programmers you'll get lots of results, probably more than you're willing to wade through. I don't have the Cummins, so keep that in mind. I've head good things about both Banks and Bully Dog when it comes to "add-ons".

I doubt that you'll see a significant gain in miles per gallon, regardless of the mods that you do. You could spend several thousand and at most see 1-2 MPG improvement (on occasion) IF you drive extremely conservatively AND all traveling conditions are perfect.

Would doing a gear swap be worth the cost in the long run? I doubt that you'll see much improvement there either, and the cost is quite high. How long would it take you to get it back in the 1-2 MPG that you MIGHT save at the pump?

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